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Configuration Management Plan

Engineering Change Proposal (ECP) Process



An Engineering Change Proposal is a formal process used to propose a change to a configuration item and it's approved baselined performance requirement and configuration documentation.


The initiation of an ECP begins at the Government's request unless for one or more of the reasons cited in Unsolicited ECPs. below.

  • Solicited ECPS. Whenever the Government identifies a need or requirement to change a CI and its configuration documentation a Class I ECP is formally requested from the contractor. A request for an ECP is coordinated with the applicable Government Contracting Officer prior to being released to the contractor.
  • Unsolicited ECPs. As a general rule, unsolicited Class I ECPs are discouraged.  However, at the discretion of the procuring activity, a preliminary ECP may be submitted to allow evaluation of the desirability of expending resources to fully document a proposed change. Changes that impact the following areas are instances where unsolicited ECPs may be justified:
    • Safety
    • Compatibility
    • Correction of Defects
    • Survivability
    • Security
    • Product improvement(s) that may significantly reduce life cycle costs, including Value Engineering Change Proposals (VECP) consistent with the DFAR Value Engineering clause of the applicable contract
    • Technology improvements

When Value Engineering (VE) clauses are included in a contract, value engineering change proposals (VECP) are submitted as Engineering Change Proposals. (DFARS 252.248-7000)



ECPs are submitted throughout the acquisition and post-acquisition process whenever changes are required to the approved configuration baseline of a System or CI.



Engineering changes can originate with either the contractor or the Government.  In either case, the Government will need detailed information from the contractor for evaluation of the technical, cost, and schedule effects of implementing the change.

Normally the Government instructs the contractor to prepare the formal ECP through the contracting officer.  The original idea to make the change could originate from the Government of the contractor, or even from the user of the equipment.

Once the ECP is formally submitted, the PM is responsible for its review, decision to disapprove or approve, and implementation (including funding).

ECPs may also be the result of PQDR submitted to the PQDR Screening Point.

DLA submits requests for Engineering Assistance (DLA Form 339) that could also generate the need for an ECP.



Terms and Definitions

General References

Specific references:

Value Engineering References:

ECPs are submitted to the System Life Cycle Manager/PM for decision.  The decision process normally includes a Configuration Control Board to review and make recommendations on the disposition of the ECP and to direct implementation of configuration changes approved and funded by the PM.

The CM Plan and the CCB Charter should include specific procedures for the initiation, receipt, review of ECP as well as the procedures for distributing decision and implementation directives.

The QDR/PQDR process generally handles changes for fielded systems based on problems reported by the user.  Where problem resolution dictates a configuration change, an ECP would be generated under the aegis of the USMC PQDR Screening Point in coordination with the PM.


[1] Go to Defense Standardization Program Office, ASSIST Database for the most up-to-date and ONLY official version of MIL-HDBK-61A. (


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